【学霸笔记】33　UNIT 5　Period 5　课时练案 课文整体教学(Using Language) 讲义 人教版高中 选择性必修一（学生版+教师版）

Period 5　 课文整体教学(Using Language) Ⅰ．文章大意 What's the main idea of the text The text compares chemical farming with organic farming and shows their advantages and disadvantages． Ⅱ．篇章结构 1．Why did many farmers welcome chemical pesticides and artificial fertilisers involved in farming A．They can fight crop disease and increase production． B．They harm both the land and people's health． C．They can help produce rich soil． D．They are not expensive． 2．What concerns many people about the use of pesticides A．Pesticides can damage the land． B．Chemicals can stay in the soil for a long time． C．Pesticides can kill harmful bacteria and insects． D．Chemicals may make people ill and even cause cancer． 3．Why do organic farmers change the kind of crop grown in each field every year A．It can help put important minerals back into the ground． B．It can avoid damage to the environment． C．It can help increase output． D．The writer doesn't tell us． 4．What is the author's purpose of writing the text A．To call on farmers to turn to organic farming． B．To introduce some good ways to make the soil rich． C．To urge the government to stop using pesticides． D．To give some advice on how to increase the output of crops． [答案]　1－4　ADAA 1．Is the author of the text for or against organic farming？How do you know 2．What other disadvantages of chemical farming did the author not list 3．Can you think of other disadvantages of organic farming [答案]　略 Ⅰ．一词多义/熟词生义 1．digest vt．& vi．消化 vt．领会；领悟 n．摘要；文摘 ①(教材原句)...the animals and humans who digest them． vt．消化 ②I have digested most of the important points in the book． vt．领会；领悟 ③I considered myself a member of Reader's Digest at the age of six．n．摘要；文摘 2．root n．根；根茎；根部；根源 ①(教材原句)For example，peanuts grow on the ground's surface，but many other vegetables put down deep roots． 根 ②Some roots do another job besides feeding their plants． 根茎 ③Money，or the love of money，is said to be the root of all evil． 根源 3．The Amazonians love jambo leaves，which they use to flavour stews and soups． vt．给……调味 Ⅱ．词块积累 1．in widespread use 　　　　 广泛使用 2．cause damage to people and the environment 对人类和环境造成损害 3．as for chemical fertilisers 至于化肥 4．be rich in nutrition 富含营养 5．essential minerals 必需的矿物质 6．as an alternative 作为一种选择 7．switch to organic farming 转向有机农业 8．focus on keeping their soil rich 注重保持土壤的肥沃 9．free of disease 免受病害 10．put down deep roots 扎根很深 11．avoid damage to the environment 避免对环境造成破坏 Ⅲ．写作佳句 1．Over time，however，what some scientists have found is that their long-term use can sometimes harm both the land and people's health． 然而，随着时间的推移，一些科学家发现，长期使用它们有时会损害土地和人们的健康。 2．Therefore，there is still a long way to find a suitable solution that puts sufficient food on the dinner table while keepi ... ...